[Elecraft] Radio Resets By Itself

[Jason Lehmann]

Hello Fellow Builders,

I have a problem and didn't find anything in the archives.  Last night I =
was trying the frequency stability test as outlined in the K2 Temp-Comp =
Pll Ref Upgrade.  I don't yet have the mod so I figured I would get a =
baseline with my newly completed K2.  Everything went well until I =
transmitted into a dummy load with 10 watts for a period of time.  I =
would say it took about 2 to 3 minutes at 10 watts and then the radio =
would reset itself with elecraft being displayed and the output power =
dropping to zero.  Then after the reset, the power would return and then =
it would reset again.  Here are some of the specifics.

K2 with all of the options except the KPA100
Voltage and current on rx as displayed    13.4v at 300ma
Voltage and current on tx (10 watts) as displayed    12.4v at 2.78a
Good dummy load with low swr
ATU in cal s so as to bypass it

The problem appears to heat related because the time to failure is =
dependant on cool down time.  Does anyone have any ideas?  Thanks.

Jason


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